Attorneys for five men imprisoned for conspiring to kill military personnel at New Jersey's Fort Dix are seeking to have their convictions overturned.

An appeal brief was filed Tuesday in the 3rd U.S. Circuit Court of Appeals in Philadelphia. Attorneys cite issues including mistakes they say were made at trial.

Prosecutors say the men had taken training trips to the Pocono Mountains and scouted out Fort Dix and other military sites. They were arrested in 2007.

A federal jury convicted the five in December 2008 of conspiring to kill U.S. military personnel. Four are serving life terms, and the fifth was sentenced to 33 years in prison.

Federal prosecutors say they plan to respond in their own filing.